Isaiah 53:5 speaks of being wounded for our transgressions — both deal with atonement, but here Isaiah's personal cleansing, there the servant's vicarious suffering.

Isaiah 43:25 declares God blots out transgressions — same theme of forgiveness as 'your guilt is taken away' here.

Daniel 10:16 describes a being touching Daniel's lips to enable speech — a direct parallel to the mouth-touching for prophetic ability.

In Matthew 9:2, Jesus declares sins forgiven, echoing the divine forgiveness Isaiah received. Both show authority to remove guilt.

In Hebrews 9:14, Christ's blood purifies the conscience, fulfilling what the coal prefigured—a superior cleansing from sin.

In 1 John 1:7, Jesus' blood cleanses from all sin, mirroring the complete removal of guilt Isaiah experienced through the coal.

In 1 John 2:2, Jesus is the propitiation for sins, directly reflecting the atoning work symbolized by the coal touching Isaiah's lips.

In Leviticus 16:12, coals from the altar are used in the Day of Atonement ritual, prefiguring the coal that cleansed Isaiah's sin.

In Numbers 16:46, Aaron uses altar fire to make atonement, paralleling the seraph's coal that atones for Isaiah's guilt.

Jeremiah 1:9 also has God touching the prophet's mouth — here the coal purifies, there God puts words into Jeremiah's mouth.

In Hebrews 9:13, animal sacrifices purify the flesh, contrasting with the direct divine cleansing of Isaiah's lips. Both are ritual purification.

In Psalm 65:3, God atones for transgressions, echoing the atonement for guilt in Isaiah 6:7.

Hosea 14:2 asks God to take away iniquity, matching the atonement theme in Isaiah 6:7.

In 1 John 2:1, Jesus is our advocate when we sin, complementing the atonement Isaiah received—both deal with sin's aftermath.